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Finding the Fourth Proportional to 249,986.44, 344,978.81 and 135,262.55

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Solution

The fourth proportional to 249,986.44, 344,978.81 and 135,262.55 is: 186,660.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,986.44 : 344,978.81 = 135,262.55 : x
  2. Step 2: Convert to fraction form
    249,986.44/344,978.81 = 135,262.55/x
  3. Step 3: Cross multiply
    249,986.44x = 344,978.81 × 135,262.55
  4. Step 4: Simplify right side
    249,986.44x = 46,662,713,536.57
  5. Step 5: Solve for x
    x = 46,662,713,536.57/249,986.44
  6. Step 6: Final answer
    x = 186,660.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.